<template>
  <el-form ref="deptForm" :model="form" :rules="formRules" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option
          v-for="item in list"
          :key="item.id"
          :value="item.username"
          :label="item.username"
        />
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input
        v-model="form.introduce"
        style="width:80%"
        placeholder="1-300个字符"
        type="textarea"
        :rows="3"
      />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { getEmployeesSimples } from "@/api/employees";
import {
  addDepartment,
  getDepartmentDetail,
  updateDepartment
} from "@/api/departments";
export default {
  props: {
    originList:{
      type:Array,
      required:true
    },
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    }
  },
  data() {
    const validCode=(rule,value,callback)=>{
      // 获取整个部们的编码
      let existCodeList=this.originList.map(item=> item.code)
      console.log('this.originList',originList);
      console.log('existCodeList',existCodeList);

      // 如果是编辑的状态，将当前编辑的部门的编码存数组里删除，然后再判断
      if (this.isEdit) {                           //删除选中的编码      //组成一个新数组（新数组没有当前选中的编码）
        existCodeList= this.originList.filter(item=> item.id!==this.id).map(item=>item.code)
      }
      // 判断当前value值，是否在数组存在
      if (existCodeList.includes(value)) {
        callback(new Error(`该部门编码${value}已存在，请换一个编码`))
      }else{
        // 不存在，校验通过
        callback()
      }

      }

      // 定义一个校验规则函数 校验部门名称同级不能重复
      const validName= (rule,value,callback)=>{
        // 被占用的列表   当前点击的部门（财务部）的子部门  [财务核算部，税务管理部，信息管理部]
        let existNameList=this.originList.filter(item=> item.pid===this.id).map(item=>item.name)
        console.log('existNameList名字',existNameList);

        // 编辑时找兄弟的处理
        if (this.isEdit) {
          // 获取当前编辑部门的id，获取到当前部门的pid
          const pid=this.originList.find(item=> item.id===this.id).pid
          console.log(pid);
          // 通过pid去所有的部门数据中找到当前编辑部门的所有的兄弟
          const brothers=this.originList.filter(item=> item.pid===pid)
          console.log(brothers);
          // 排除自己
          existNameList=brothers.filter(item=> item.id!==this.id).map(item=>item.name)
        }
         console.log('existNameList名字',existNameList);

        //判断当前用户输入的value，在被占用列表中是否存在
        if (existNameList.includes(value)) {
          //校验失败
          callback(new Error(`该部门名称${value}已经存在，不能重复！`))
        } else {
          callback()
        }
      }
    return {
      list: [],
      form: {
        name: "",
        code: "",
        manager: "",
        introduce: ""
      },
      formRules: {
        name: [
          { required: true, message: "请输入部门名称", trigger: "blur" },
          { min: 1, max: 50, message: "请输入1~50的部门名称", trigger: "blur" },
          { validator:validName,trigger:'blur'}
        ],
        code: [
          { required: true, message: "请输入部门编码", trigger: "blur" },
          { min: 1, max: 50, message: "请输入1~50的部门编码", trigger: "blur" },
          { validator:validCode,trigger:'blur'}
        ],
        manager: [
          { required: true, message: "部门负责人不能为空", trigger: "blur" }
        ],
        introduce: [
          { required: true, message: "部门介绍不能为空", trigger: "blur" },
          {
            min: 1,
            max: 300,
            message: "部门介绍要求1-300个字符",
            trigger: "blur"
          }
        ]
      }
    };
  },
  // 侦听组件内props中属性或者data函数中属性的变化
  // watch: {
  //   id: function(new_val, old_val) {
  //     console.log(new_val, "new_val");
  //     console.log(old_val, "old_val");

  //     this.loadDepartmentDetail();
  //   }

    // id: {
    //   handler(new_val, old_val) {
    //     console.log(new_val, "new_val");
    //     console.log(old_val, "old_val");
    //   },
    //   immediate: true //页面一加载就会立即执行一次
    // }
  
  created() {
    this.laodEmployeesSimples();
    if (this.isEdit) {
      this.loadDepartmentDetail();
    }
  },

  methods: {
    // 重置表单
    resetForm(){
      this.$refs.deptForm.resetFields()
    },
    // 实现编辑部门
    async doEdit() {
      try {
        await updateDepartment(this.form);
        this.$emit("success");
      } catch (error) {
        console.log(error);
      }
    },
    //加载部门详情数据，填充到表单里
    async loadDepartmentDetail() {
      try {
        const res = await getDepartmentDetail(this.id);

        this.form = res.data;
      } catch (error) {
        console.log(error);
      }
    },
    //获取部门负责人列表
    async doAdd() {
      try {
        //this.form中缺少pid,获取到pid??
        const res = await addDepartment({ pid: this.id, ...this.form });
        console.log("addDepartment", res);

        this.$emit("success");
      } catch (error) {
        console.log(error);
      }
    },
    hSubmit() {
      this.$refs.deptForm.validate(valid=>{
        if(!valid) return
      // 实现编辑部门或者新增子部门
      this.isEdit ? this.doEdit() : this.doAdd();
      // })
     })
    },
    hCancel() {
      // 关闭弹层  父组件
      this.$emit("close");
    },
    // 获取部门负责人列表
    async laodEmployeesSimples() {
      try {
        const res = await getEmployeesSimples();
        // console.log("getEmployeesSimples", res);
        this.list = res.data;
      } catch (error) {
        console.log(error);
      }
    }
  }
};
</script>